export NDK=/Users/ljg/Library/Android/sdk/ndk/25.1.8937393
GOOS=android \
GOARCH=arm64 \
CC=$NDK/toolchains/llvm/prebuilt/darwin-x86_64/bin/aarch64-linux-android21-clang \
CXX=$NDK/toolchains/llvm/prebuilt/darwin-x86_64/bin/aarch64-linux-android21-clang++  \
CGO_ENABLED=1 go build -v -buildmode=c-shared   -o=android/libuplink.so